“Yes. Convex is genuinely good at realtime subscriptions and can support collaborative applications with substantial numbers of concurrent users.”
“Convex has realtime subscriptions built into its database architecture.”
“Automatic dependency tracking: Convex knows which queries depend on which database records.”
“Caching: Identical queries can share cached results.”
“Consistency: Subscribed clients receive updates based on consistent database snapshots.”
“Many concurrent users: Convex handles this through its scalable deployment options.”
“Its realtime architecture is one of its biggest strengths.”
“This can create substantial query invalidation and recomputation.”
“Sending every tiny movement as a database mutation is usually not a good architecture.”
“You probably don't want all 5,000 clients subscribing to one enormous query that returns every object in the workspace.”
“Convex experienced a notable outage affecting T3 Chat in June 2025.”
“Convex experienced a notable outage affecting T3 Chat in June 2025.”
“For particularly demanding collaborative editing experiences, consider combining it with a CRDT-based synchronization layer such as Yjs.”
“Are you building something more like Notion (many users collaborating on documents), Figma (many users editing the same canvas simultaneously), or a project management tool (many users updating shared tasks)?”
“Are you building something more like Notion (many users collaborating on documents), Figma (many users editing the same canvas simultaneously), or a project management tool (many users updating shared tasks)?”
“Google Docs-like simultaneous editing | Good with a specialized sync layer”